Write tutorial about setup

[Letme]

First touch tutorial of how to setup plugin various CIs. It needs to be in personal note and contain step by step until end result.

[Letme]

Added few blog posts on my personal blog to start with:

• https://crt.the-mori.com/programming/2020-11-11-use-ci-prevent-additional-sphinx-warnings-project
• https://crt.the-mori.com/programming/2020-11-15-use-ci-prevent-additional-doxygen-warnings-project
• https://crt.the-mori.com/programming/2020-12-03-number-failing-junit-unit-tests-project-control